| STRUCTURAL SECURITY & INTEGRATED TRANSPORT LIMITED | Private company limited by shares | Dissolved |
| INTELLIGENT SECURITY SOLUTIONS LIMITED | Private company limited by shares | Live |
| Intelligent Security Solutions (Mongolia) Limited | Private company limited by shares | Live |
| Security Intelligent Systems Limited | Private company limited by shares | Live |
| XENA Intelligent Security Limited | Private company limited by shares | Live |
| INTER SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| INTERNAL SECURITY LIMITED | Private company limited by shares | Dissolved |
| 100 Internet Security Limited | Private company limited by shares | Live |
| DOMINION INVESTIGATION AND SECURITY SERVICE LIMITED | Private company limited by shares | Dissolved |
| SECURITY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Key Security Investment Limited | Private company limited by shares | Live |
| Dart Security Investment Limited | Private company limited by shares | Live |
| INWELLS SECURITY SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| iRetail Security Technology Co. Limited | Private company limited by shares | Live |
| ISAT SECURITY ALARM & TELECOMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| I-SOON Digital Security Company Limited | | Live |
| ITSec Security Consulting Limited | | Live |
| JACKSON SECURITY SYSTEMS COMPANY LIMITED | Private company limited by shares | Live |
| JANTEC SECURITY SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| HK JINRUI SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| JKDC SECURITY CO LIMITED | Private company limited by shares | Live |
| SHENZHEN JOTECH SECURITY CO., LIMITED | Private company limited by shares | Dissolved |
| KABOARD SECURITY LIMITED | Private company limited by shares | Dissolved |
| KAPRO SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| KAVASS SECURITY TECH LIMITED | Private company limited by shares | Live |
| HK KEKAXI SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| KINGTING SECURITY AUTOMATION LIMITED | Private company limited by shares | Live |
| KONE SECURITY COMPANY LIMITED | Private company limited by shares | Live |
| CENTIGON SECURITY HONG KONG LIMITED | Private company limited by shares | Live |
| APAC SECURITY (HONG KONG) LIMITED | Private company limited by shares | Live |
| BELL SECURITY (HONG KONG) LIMITED | Private company limited by shares | Live |
| DEIMOS SECURITY HONG KONG LIMITED | Private company limited by shares | Live |
| Tenable Network Security Hong Kong Limited | Private company limited by shares | Live |
| YALE SECURITY PRODUCTS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| G4S Security Systems (Hong Kong) Limited | Private company limited by shares | Live |
| BIOCOME SECURITY TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| SECURITY TICKETING HONG KONG LIMITED | Private company limited by shares | Live |
| Korea An Nai Security Technology Limited | Private company limited by shares | Live |
| KUOKON SECURITY LIMITED | Private company limited by shares | Live |
| EASTERN SECURITY LABELS LIMITED | Private company limited by shares | Dissolved |
| Laputa Security Technology Limited | | Live |
| SKY LEOPARD SECURITY LIMITED | Private company limited by shares | Live |
| SECURITY LEVERAGE SYSTEMS, LIMITED | Private company limited by shares | Dissolved |
| LICHEN SECURITY CO., LIMITED | Private company limited by shares | Live |
| SECURITY LIFE ASSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Loyalty Security Service Limited | Private company limited by shares | Live |
| CMF SECURITY (MACAU) LIMITED | Private company limited by shares | Dissolved |
| MALDUN SECURITY LIMITED | Private company limited by shares | Live |
| Z MANAGEMENT AND SECURITY LIMITED | Private company limited by shares | Dissolved |
| HOK MAN SECURITY & MANAGEMENT LIMITED | Private company limited by shares | Live |
| ON WAH SECURITY MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |
| A-BOND SECURITY & MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |
| Security Management Resources Asia Limited | Private company limited by shares | Live |
| SECURITY ASSETS MANAGEMENT LIMITED | Private company limited by shares | Live |
| Security Of Supply Chain Management Co., Limited -The- | Private company limited by shares | Live |
| LEADER DATA SECURITY AND MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |
| DEKA Security and Management Limited | Private company limited by shares | Live |
| Easy Security Management Limited | Private company limited by shares | Live |
| G4One Security & Management Limited | Private company limited by shares | Live |
| GALORE SECURITY MANAGEMENT LIMITED | Private company limited by shares | Live |
| HANG SENG SECURITY MANAGEMENT LIMITED | Private company limited by shares | Live |
| JOYFUL MANAGEMENT & SECURITY CO. LIMITED | Private company limited by shares | Live |
| S.P.Property Management & Security Company Limited | Private company limited by shares | Live |
| TIGA SECURITY MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |
| Mandata Security Limited | Private company limited by shares | Live |
| MG3 Security & Manpower Limited | Private company limited by shares | Live |
| MANTON SECURITY LIMITED | Private company limited by shares | Live |
| Kloongs Security Seals Manufacturing Company Limited | Private company limited by shares | Live |
| SINOGUARDS MARINE SECURITY LIMITED | Private company limited by shares | Live |
| MASTERMIND SECURITY CONSULTANCY LIMITED | Private company limited by shares | Live |
| Security Packing Material Co., Limited | Private company limited by shares | Dissolved |
| MAXIMUM SECURITY ASIA LIMITED | Private company limited by shares | Dissolved |
| MAXIMUM SECURITY INDOCHINA LIMITED | Private company limited by shares | Dissolved |
| M.F.G. Security Limited | Private company limited by shares | Live |
| MIKUNI SECURITY COMPANY LIMITED | Private company limited by shares | Live |
| MING WAI SECURITY COMPANY LIMITED | Private company limited by shares | Dissolved |
| MINT SECURITY LIMITED | Private company limited by shares | Dissolved |
| M.L.M SECURITY LIMITED | Private company limited by shares | Dissolved |
| ASIA MODERN SECURITY LIMITED | Private company limited by shares | Live |
| Shield Security Monitoring Limited | Private company limited by shares | Dissolved |
| FIRST SECURITY MORTGAGE COMPANY LIMITED | Private company limited by shares | Dissolved |
| M-Phoenix Security Limited | | Live |
| SECURITY MUTUAL LIMITED | Private company limited by shares | Dissolved |
| nCipher Security (Hong Kong) Limited | Private company limited by shares | Live |
| NEGACO SECURITY LIMITED | Private company limited by shares | Live |
| Neptune Cyber Security Limited | Private company limited by shares | Live |
| SECURITY & NETWORK SERVICE LIMITED | Private company limited by shares | Live |
| NETWORK SECURITY SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| Network Security Solutions Limited | Private company limited by shares | Live |
| NEWERTON SECURITY LIMITED | Private company limited by shares | Live |
| New-vision Security Co., Limited | Private company limited by shares | Live |
| Next Security Limited | | Live |
| NovoTech Security Systems Company Limited | Private company limited by shares | Dissolved |
| Numen Security Limited | Private company limited by shares | Live |
| Omas Security Limited | Private company limited by shares | Live |
| ONWARD SECURITY COMPANY LIMITED | Private company limited by shares | Live |
| ORIENT SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| ORIENTAL SECURITY COMPANY LIMITED | Private company limited by shares | Live |
| Ouroboros Security Limited | Private company limited by shares | Live |
| OYESEE SECURITY LIMITED | Private company limited by shares | Live |